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The Open Cluster Chemical Abundances and Mapping Survey. VIII. Galactic Chemical Gradient and Azimuthal Analysis from SDSS/MWM DR19

  • Authors: Jonah M. Otto, Peter M. Frinchaboy, Natalie R. Myers, James W. Johnson, John Donor, Ahabar Hossain, Szabolcs Mészáros, Hailey Wallace, Katia Cunha, Binod Bhattarai, Amaya Sinha, Gail Zasowski, Sarah R. Loebman, Alessa I. Wiggins, Adrian M. Price-Whelan, Taylor Spoo, Diogo Souto, Dmitry Bizyaev, Kaike Pan, Andrew K. Saydjari, Ying-Yi Song

Jonah M. Otto et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 19.

The [X/H] vs. RGuide trend for the α-elements (O, Mg, Si, S, Ca, Ti). The color bar indicates the number of member stars, saturating at five member stars. Clusters with a 1σ scatter greater than 0.2 dex for a specific element were not used to determine the fit (solid blue line) and are not plotted. The derived gradient and number of clusters (N) are shown in each panel.

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